23 September 1990 at Bodiam
| 500cc | 350cc | 250cc |
| 1- T. Banks | 1- W. Broadhurst | 1- I. Rutter |
| 2- W. James | 2- N. Scopes | 2- R. Knight |
| 3- A. Farmer | 3- M. Seabright | 3- L. Potter |
| LH Sidecars | RH Sidecars | |
| 1- W. Penfold & N. Shaw | 1- R. Measor & A. Bailey | |
| 2- N. Miles & S. Farmer | 2- S. Baker & C. Martin | |
| 3- J. O’Donnell & A. Butler | 3- R. Cameron & S. Smith |
15 July 1990 at Bodiam
| 500cc | LH Sidecars | 350cc |
| 1- S. Wilson | 1- T. Pachol & L. Pachol | 1- L. Potter |
| 2- A. Harmer | 2- W. Penfold & N. Shaw | 2- D. Mears |
| 3- P. Mitchell | 3- T. Penfold & l. Chivers | 3- N. Scopes |
| RH Sidecars | 250cc | LH Sidecars (Dave Buck Trophy) |
| 1- T. Bennett & A. Cowper-Smith | 1- K. Lanchester | 1- D. Penfold & D. Levis |
| 2- G. Penfold & J. Slading | 2- I. Lee-Amies | 2- A. Penfold & J. Penfold |
| 3- M. Lewin & D. Norris | 3- M. Hill | 3- J. Fish & G. Moore |
3 June 1990 at Bodium
| RH Sidecars | 500cc | LH Sidecars (Support) |
| 1- Shane Baker & Clinton Martin | 1- Joe Sreen | 1- Tom Penfold & L. Chivers |
| 2- Dave Heath & Kevin Thompason | 2- Lee Pavitt | 2- Tony Penfold & N. Orpen |
| 3- Dave Steer & Mick Cave | 3- Andy Smith | 3- Bill Penfold & Nigel Shaw |
| 4- Gary Parmenter & Tony Hayford | 4- Rob Fortune | 4- J. Arnott & P. Bolton |
| 5- Martin Baker & Mark Edwards | 5- Marvyn Cox | 5- Luke Pachol & Terry Pchol |
| 6- Jerry Adams & Shaun Pittock | 6- Kelvin Tatum | 6- John Fish & ANOther |